Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 41
6.
Mount lower part (item 5) on the housing.
7.
Push the seal with the contact socket of the gland (item 2 & 3) and
flush into the lower part (item 5).
8.
Install the domed cap nut (item 1) onto the lower part (item 5).
Transmitter Housing Grounding
In case you need to ground the transmitter housing, the grounding
connector is found inside the housing (see Figure 1 on page 22). Note
anyhow that the probe is connected to the same potential as the housing.
Make sure that different groundings are made to the same potential.
Otherwise harmful ground currents may be generated.
If it is needed to have galvanic isolation of the power supply line from
the output signals, DMT346 can be ordered with optional output isolation
module. This module prevents harmful grounding loops.
Signal and Power Supply Wiring
When connecting transmitter with 8-pin connector, see section 8-Pin
Connector on page 60.
0605-028
Figure 26
Screw Terminal Block on the Motherboard
Numbers refer to Figure 26 above:
1 = Supply
terminals
POWER 10 ... 35 VDC = 24 V~
2
=
User port (RS-232 terminals)
3
=
Analog signal terminals